Welcome back to Billboard's weekly video show "Real-Time Rewind," which recaps the past week's hottest action on the new Billboard Real-Time Twitter Charts -- Trending 140 and Emerging Artists -- and the news that's driving the action. We've got a special episode this week, where Joe Levy takes us behind the scenes at the Clive Davis pre-Grammys party to speak with Rita Ora, Mark Ronson, Aloe Blacc and Pentatonix.

Some people call the Clive Davis pre-party the "Grammys before the Grammys." While behind the scenes at the party, Billboard captured how the famous Clive Davis' class photo comes together.

"This is an iconic photograph I think for many reasons," Rita Ora said, who was in attendence for the first time. "Not only [because of] who's in it, but he's been doing this every year. I've seen them growing up, and now I'm in it."

"You know, I came here about seven years ago, in 2008 I had my picture taken," Mark Ronson said, sharing a personal experience from a previous Clive Davis class photo. "I came in with this very garrish silver disco ball jacket and Rod Stewart walks in wearing the exact same jacket!"

Aloe Blacc shared with Levy that Stevie Wonder and Elton John would be a dream collaboration for him, since "I'm The Man" so keenly quotes "Your Song." Pentatonix, 2015 Grammy winners for Best Arrangement, Instrumental Or A Capella, say that Sam Smith's voice would be an excellent fit for their award-winning singing lineup.

The Trending 140 chart measures the acceleration of conversation around artists and their music, while the Emerging Artists chart measures the volume of tweets around new artists and their songs.